P0094
Fuel System Leak Detected - Small Leak
This code indicates fuel system leak detected - small leak. It relates to the fuel & air metering / auxiliary emission controls and may affect performance, emissions, or drivability depending on the exact failure.
Fuel System Leak Detected - Small Leak
Common causes
- medium
Sensor failure
O2, NOx, pressure, or temperature sensors can drift or fail.
Typical part cost: $100-400
- medium
Exhaust leak or restriction
Leaks before sensors or a restricted exhaust can set emissions codes.
Typical part cost: $100-400
See all causes + fix costs
Create a free Wrenchify account to unlock the rest for P0094.
Unlock causesFree forever · No credit card
First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
Get the full step-by-step diagnosis
Create a free Wrenchify account to unlock the rest for P0094.
Unlock diagnosisFree forever · No credit card
Related codes
See related trouble codes
Create a free Wrenchify account to unlock the rest for P0094.
Unlock related codesFree forever · No credit card
Frequently asked questions
What does P0094 mean?
P0094 means "Fuel System Leak Detected - Small Leak". It is a generic OBD-II code that points to a fault in the fuel & air metering / auxiliary emission controls.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
Get the full P0094 diagnosis for your vehicle
Year, make, model + step-by-step repair help — free plan included.